package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.PasswordConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.EmployeeDTO;
import com.sky.dto.EmployeeLoginDTO;
import com.sky.dto.EmployeePageQueryDTO;
import com.sky.entity.Employee;
import com.sky.exception.AccountLockedException;
import com.sky.exception.AccountNotFoundException;
import com.sky.exception.PasswordErrorException;
import com.sky.mapper.EmployeeMapper;
import com.sky.utils.result.PageResult;
import com.sky.service.EmployeeService;
import com.sky.utils.result.Result;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.util.DigestUtils;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class EmployeeServiceImpl implements EmployeeService {

    @Autowired
    private EmployeeMapper employeeMapper;

    /**
     * 员工登录
     *
     * @param employeeLoginDTO
     * @return
     */
    public Employee login(EmployeeLoginDTO employeeLoginDTO) {
        String username = employeeLoginDTO.getUsername();
        String password = employeeLoginDTO.getPassword();

        //1、根据用户名查询数据库中的数据
        Employee employee = employeeMapper.getByUsername(username);

        //2、处理各种异常情况（用户名不存在、密码不对、账号被锁定）
        if (employee == null) {
            //账号不存在
            throw new AccountNotFoundException(MessageConstant.ACCOUNT_NOT_FOUND);
        }

        //密码比对
        // 对前端传过来的明文密码进行md5处理
       password = DigestUtils.md5DigestAsHex(password.getBytes());




        if (!password.equals(employee.getPassword())) {
            //密码错误
            throw new PasswordErrorException(MessageConstant.PASSWORD_ERROR);
        }

        if (employee.getStatus() == StatusConstant.DISABLE) {
            //账号被锁定
            throw new AccountLockedException(MessageConstant.ACCOUNT_LOCKED);
        }

        //3、返回实体对象
        return employee;
    }

    /*
     * 新增员工
     * */
    @Override
    public void insert(EmployeeDTO employeeDTO) {

        System.out.println("获取当前线程的id："+Thread.currentThread().getId());

        Employee employee=new Employee();
        //对象属性拷贝  BeanUtils
        BeanUtils.copyProperties(employeeDTO,employee);
        //设置账号状态  StatusConstant里面提供的属性
       employee.setStatus(StatusConstant.ENABLE);
        //设置密码 DigestUtils.md5DigestAsHex加密  PasswordConstant.DEFAULT_PASSWORD:默认密码123456
        employee.setPassword(DigestUtils.md5DigestAsHex(PasswordConstant.DEFAULT_PASSWORD.getBytes()));
        //设置创建时间和修改时间
        //employee.setCreateTime(LocalDateTime.now());
        //employee.setUpdateTime(LocalDateTime.now());
        //设置当前记录创建人的id和修改人id
        //
        //employee.setCreateUser(BaseContext.getCurrentId());
        //employee.setUpdateUser(BaseContext.getCurrentId());
        employeeMapper.insert(employee);

    }

    /*
    * 员工分页查询
    * */
    @Override
    public PageResult PageQuery(EmployeePageQueryDTO employeePageQueryDTO) {
        //select * from employee limit 0,10;
        //开始分页查询
        PageHelper.startPage(employeePageQueryDTO.getPage(),employeePageQueryDTO.getPageSize());

        Page<Employee> page = employeeMapper.pageQuery(employeePageQueryDTO);
        //通过PageHelper中的page获得PageResult中的属性
        long total = page.getTotal();
        List<Employee> records = page.getResult();
        return new PageResult(total,records);
    }

    /*
    * 启用或禁用员工账号
    * */
    public void starStop(Integer status, Long id) {
        //SQL语句   update employee set status=? where id=?;
        //设置参数，第一种
      /*  Employee employee=new Employee();
        employee.setStatus(status);
        employee.setId(id);*/

        //第二种 前提是需要加@Bulider构建器
       Employee employee= Employee.builder()
                .status(status)
                .id(id)
                .build();
        employeeMapper.update(employee);

    }

    @Override
    public Employee getById(Long id) {

       Employee employee= employeeMapper.getById(id);
       employee.setPassword("***");
       return  employee;
    }
    /*
    * 编辑员工信息
    * */

    public void update(EmployeeDTO employeeDTO) {
        //因为前面使用了修改操作，并且配备了xml文件，但是使用Employee来操作，所以这里也需要
        //直接对象拷贝过去
        Employee employee=new Employee();
        BeanUtils.copyProperties(employeeDTO,employee);


        //employee.setUpdateTime(LocalDateTime.now());
        //employee.setCreateUser(BaseContext.getCurrentId());
        employeeMapper.update(employee);

    }
}
